Home / 13,959.28-19,263.78-7,671.76

Finding the Fourth Proportional to 13,959.28, 19,263.78 and 7,671.76

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Solution

The fourth proportional to 13,959.28, 19,263.78 and 7,671.76 is: 10,587.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.28 : 19,263.78 = 7,671.76 : x
  2. Step 2: Convert to fraction form
    13,959.28/19,263.78 = 7,671.76/x
  3. Step 3: Cross multiply
    13,959.28x = 19,263.78 × 7,671.76
  4. Step 4: Simplify right side
    13,959.28x = 147,787,096.85
  5. Step 5: Solve for x
    x = 147,787,096.85/13,959.28
  6. Step 6: Final answer
    x = 10,587.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.